1,4-Dihydro-2H-isoquinoline derivatives

Abstract

1,4-Dihydro-2H-isoquinoline derivatives of the general formula I ##STR1## in which R.sup.1 represents hydrogen or straight chain or branched alkyl of 1 to 6 carbon atoms, R.sup.2 represents low molecular dialkylaminoalkyl, in which both alkyl groups of the dialkylamino group together with the nitrogen atom may also form a 5-, 6- or 7-membered saturated ring in which one carbon atom may be substituted by an oxygen atom, a sulfur atom or another nitrogen atom which may be substituted by hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, or R.sup.1 and R.sup.2 together may form a 5- or 6-membered saturated ring containing 1 nitrogen atom, R.sup.3 represents phenyl which may be mono- or di-substituted by halogen, nitro, amino or sulfamoyl, or acylamino or alkyl each containing 1 to 4 carbon atoms, or pyridyl, R.sup.4 and R.sup.5, which may identical or different, represent hydrogen or alkoxy of 1 to 4 carbon atoms, and X represent oxygen or sulfur, Their physiologically tolerated salts, process for preparing them. The compounds are active on the coronary circulation and are distinguished in particular by an anti-arrhythmic action and may, therefore, be used in the treatment of disorders of the heart rhythm.

Dependencies are inferred from the claim text.